NI SCXI-1333 User manual

INSTALLATION INSTRUCTIONS
NI SCXI -1333
Terminal Block for the NI SCXI-1129
This guide describes how to install and connect signals to the
National Instruments SCXI-1333 terminal block to configure the
SCXI-1129 switch module as a quad 4 ×16 matrix.
You can use the SCXI-1333 with the SCXI-1129 to create four,
4×16 matrices. The SCXI-1333 is a general-purpose terminal block
that gives you access to all row and column connections. Because of
the general-purpose nature of this terminal block, you can combine the
rows and/or columns to create many different matrix configurations.
Spring terminals on the SCXI-1333 allow you to access each 4 ×16 matrix.
The SCXI-1333 provides terminals for scanner advanced output and
external input trigger signals and contains two 128-pin DIN connectors
for connecting columns between modules.
Refer to the NI Switches Getting Started Guide to determine when to install
the terminal block. Visit ni.com/switches for information on other
switching solutions.
Conventions
The following conventions are used in this guide:
»The »symbol leads you through nested menu items and dialog box options
to a final action. The sequence File»Page Setup»Options directs you to
pull down the File menu, select the Page Setup item, and select Options
from the last dialog box.
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NI SCXI-1333 Installation Instructions 2 ni.com
This icon denotes a caution, which advises you of precautions to take to
avoid injury, data loss, or a system crash. When this symbol is marked
on a product, refer to the Read Me First: Safety and Radio-Frequency
Interference document for information about precautions to take.
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as menu items and dialog box options. Bold text also denotes parameter
names.
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to a key concept. Italic text also denotes text that is a placeholder for a word
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1. Unpack the Terminal Block
To avoid damage in handling the terminal block, take the following
precautions:
Caution Never touch the exposed pins of connectors.
• Ground yourself using a grounding strap or by touching a grounded
object.
• Touch the antistatic package to a metal part of your computer chassis
before removing the terminal block from the package.
Remove the terminal block from the package and inspect the terminal block
for loose components or any sign of damage. Notify NI if the terminal
block appears damaged in any way. Do not install a damaged terminal
block into your system.
Store the SCXI-1333 in the antistatic envelope when not in use.

©National Instruments Corporation 3 NI SCXI-1333 Installation Instructions
2. Verify the Components
Make sure that you have the following items:
❑SCXI-1333 terminal block
❑SCXI chassis
❑SCXI-1129 switch module
❑1/8 in. flathead screwdriver
❑Numbers 1 and 2 Phillips screwdrivers
❑Long-nose pliers
❑Wire cutter
❑Wire insulation stripper
❑Matrix expansion plug (to expand the number of rows of a matrix)
3. Connect Signals
To connect the signal(s) to the terminal block, refer to Figures 1 and 2
while completing the following steps:
Caution This module is rated for Measurement Category I and intended to carry signal
voltages no greater than 150 V. This module can withstand up to 800 V impulse voltage.
Do not use this module for connection to signals or for measurements within Categories II,
III, or IV. Do not connect to MAINS supply circuits (for example, wall outlets) of 115 or
230 VAC. Refer to the NI Switches Getting Started Guide for more information on
measurement categories.
When hazardous voltages (>42.4 Vpk/60 VDC) are present on any relay terminal, safety
low-voltage (≤42.4 Vpk/60 VDC) cannot be connected to any other relay terminal.
1. Prepare the signal wire by stripping the insulation no more than 7 mm
from the end of the wire.
2. Remove the top cover screw.
3. Unsnap and remove the top cover.
4. Loosen the two strain-relief screws on the strain-relief bar.
5. Run the signal wires through the strain-relief opening.

NI SCXI-1333 Installation Instructions 4 ni.com
6. Use a flathead screwdriver to press the spring tab of a spring terminal.
Insert the stripped end of the wire fully into the spring terminal.
Release the spring tab to secure the wire. No bare wire should extend
past the spring terminal. Exposed wire increases the risk of a
short-circuit causing a failure.
7. Connect the safety earth ground to the safety ground lug.
8. Tighten the two screws on the strain-relief assembly to secure the
cables.
9. Reinstall the top cover.
10. Replace the top cover screw.
Figure 1. SCXI-1333 Top Cover Diagram
1TopCover 2 Top Cover Screw
1
2

©National Instruments Corporation 5 NI SCXI-1333 Installation Instructions
Figure 2. SCXI-1333 Parts Locator Diagram
1 Spring Terminals
2 Column Connectors
3 Rear Connector
4 Thumbscrew
5 Spring Pad
6 Strain-Relief Screw
7 Strain-Relief Bar
8 Safety Ground Lug
11
2
2
7
81
4
3
6
5

NI SCXI-1333 Installation Instructions 6 ni.com
4. Install the Terminal Block
To connect the SCXI-1333 to the SCXI-1129 front panel, refer to Figure 3
and complete the following steps:
Note Install the SCXI-1129 if you have not already done so. Refer to the NI Switches
Getting Started Guide for more information.
1. Plug the SCXI-1333 onto the front connector of the SCXI-1129.
2. Tighten the top and bottom thumbscrews on the terminal block rear
panel to hold it securely in place.
Figure 3. Installing the SCXI-1333 Terminal Block
1Thumbscrews 2 Front Connector 3 SCXI-1129 4 SCXI-1333
4
1
3
2

©National Instruments Corporation 7 NI SCXI-1333 Installation Instructions
5. Expand the Number of Rows
The SCXI-1333 offers convenient methods for expanding the number
of rows of a matrix using two or more SCXI-1333 terminal blocks.
Caution When using matrix expansion plugs, only connect terminal blocks of the same
type. Connecting different types of terminal blocks can damage the module or the
equipment connected to the module. For example, you can connect two or more
SCXI-1333 terminal blocks; however, do not connect the SCXI-1333 with any other
type of terminal block.
Figure 4 shows how to use a matrix expansion plug with SCXI terminal
blocks to expand the number of rows of a 4 ×32 matrix, as an example.
The matrix expansion plug connects columns to expand the number
of rows. To expand the number of rows of a matrix, connect a matrix
expansion plug to the top or bottom column connectors of the two terminal
blocks.
Figure 4. Expanding the Number of Rows with the Matrix Expansion Plug
1 Matrix Expansion Plug 2 Thumbscrews 3 Column Connectors
4
32
4
32
8
32
3
1
2
3
Module 1
Matrix
Expansion
Plug
Module 2

NI SCXI-1333 Installation Instructions 8 ni.com
The SCXI-1333 configures the SCXI-1129 as four separate
4×16 matrices. Connecting two SCXI-1333 terminal blocks
as described above creates four separate 8 ×16 matrices.
Specifications
Maximum Working Voltage
Maximum working voltage refers to the signal voltage plus the
common-mode voltage.
Channel-to-earth .....................................150 V, Installation Category I
Channel-to-channel.................................150 V
Maximum Current
Maximum current
(per channel) ...........................................2 ADC, 2 AAC
Environmental
Operating temperature ............................0 to 50 °C
Storage temperature................................–20 to 70 °C
Humidity.................................................10 to 90% RH, noncondensing
Pollution Degree .....................................2
Approved at altitudes up to 2,000 m
Indoor use only
Safety
This product is designed to meet the requirements of the following
standards of safety for electrical equipment for measurement, control,
and laboratory use:
• IEC 61010-1, EN 61010-1
• UL 3111-1, CSA 61010-1
Note For UL and other safety certifications, refer to the product label, or visit
ni.com/certification, search by model number or product line, and click the
appropriate link in the Certification column.

©National Instruments Corporation 9 NI SCXI-1333 Installation Instructions
Electromagnetic Compatibility
This product is designed to meet the requirements of the following
standards of EMC for electrical equipment for measurement, control,
and laboratory use:
• EN 61326 EMC requirements; Minimum Immunity
• EN 55011 Emissions; Group 1, Class A
• CE, C-Tick, ICES, and FCC Part 15 Emissions; Class A
Note For EMC compliance, operate this device with shielded cables.
CE Compliance
This product meets the essential requirements of applicable European
Directives, as amended for CE marking, as follows:
• 2006/95/EC; Low-Voltage Directive (safety)
• 2004/108/EC; Electromagnetic Compatibility Directive (EMC)
Note Refer to the Declaration of Conformity (DoC) for this product for any additional
regulatory compliance information. To obtain the DoC for this product, visit ni.com/
certification, search by model number or product line, and click the appropriate link
in the Certification column.
Environmental Management
National Instruments is committed to designing and manufacturing
products in an environmentally responsible manner. NI recognizes that
eliminating certain hazardous substances from our products is beneficial
not only to the environment but also to NI customers.
For additional environmental information, refer to the NI and the
Environment Web page at ni.com/environment. This page contains the
environmental regulations and directives with which NI complies, as well
as other environmental information not included in this document.
Waste Electrical and Electronic Equipment (WEEE)
EU Customers At the end of their life cycle, all products must be sent to a WEEE recycling
center. For more information about WEEE recycling centers and National Instruments
WEEE initiatives, visit ni.com/environment/weee.htm.
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